1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nataly862011 [7]
2 years ago
12

Evaluate 1/3m-1-1/2n when m=21 and n=12​

Mathematics
1 answer:
siniylev [52]2 years ago
4 0
The answer is 0, 1/3 of 21 is 7, 7-1=6, 1/2 of 12= 6, and 6-6=0. Hope this helps!
You might be interested in
Put the following equation of a line into slope-intercept form, simplifying all fractions. 15x - 3y = 15​
MaRussiya [10]
Slope= 5
X-intercept= -5/5 = -1
Y-intercept= 5/1 = 5.0000000
8 0
2 years ago
What are the solutions to the system of equations? y=− x 2 +5x+6 −6x+y=6
Komok [63]

Answer:

option B

(−1, 0) and (0, 6)

Step-by-step explanation:

Given in the question two equations,

Equation 1

y =−x² + 5x + 6

Equation 2

−6x + y = 6

plug value of y in second equation

−6x −x² + 5x + 6 = 6

-x² -6x + 5x +6 - 6 = 0

-x² - x + 0 = 0

-x² -x = 0

-x(x+1) = 0

x = 0

and

x = -1

plug value of x in second equation to find y

x = 0

−6(0) + y = 6

 0 + y = 6

 y = 6

 and

x = -1

−6(-1) + y = 6

6 + y = 6

y = 0

8 0
2 years ago
Read 2 more answers
A come and a pyramid has equal heights and volumes.if the base area of the pyramid is 154cm2.find the radius of the cone.
Dmitry_Shevchenko [17]

Answer:

Radius = 8.575 cm

Step-by-step explanation:

Formula for volume of a pyramid is;

V_p = ½Ah

Where A is area of base and h is height

Also, formula for volume of cone is given as;

V_c = ⅓πr²h

Now, we are told that V_p = V_c and that h is the same for both shapes.

Thus ;

½Ah = ⅓πr²h

h will cancel out to give;

½A = ⅓πr²

Cross multiply to give;

3A/2π = r²

Base area of pyramid is given as 154 cm². Thus;

(3 × 154)/2π = r²

r = √((3 × 154)/2π

r = 8.575 cm

4 0
2 years ago
What is the perimeter of a triangle with 3 sides that measure 8 ft, 20 ft, 12 ft
Darya [45]

Answer:

40 ft

Step-by-step explanation:

Perimeter is the sum of all 3 sides of a triangle.

For this particular triangle, add 8+20+12:

40

5 0
2 years ago
Read 2 more answers
Tan (30)=14/x<br><br> need for big ideas assignment
Ann [662]

Step-by-step explanation:

tan30 = 14/x

x = 14tan30

x = -89.7

7 0
2 years ago
Other questions:
  • The perimeter of a certain rectangle is 16 times the width. The length is 12cm more than the width. Find the length of the recta
    8·1 answer
  • What type of line is the graph of x = -2
    10·2 answers
  • 108/40 in its simplest form
    13·1 answer
  • How many more equal angles does a square have than a rectangle?
    12·1 answer
  • What is the process for finding the answer to:<br> 0.2x - 1 = -1?
    7·2 answers
  • A spy is trying to escape. She must get by four guards. Each guard takes half of her remaining money. She then $64 for her plane
    6·1 answer
  • What are the coordinates of A? b) What are the coordinates of B?​
    10·1 answer
  • Can you guys help me out on this? I'm still learning sign, cosign, and tangent :)
    8·1 answer
  • Priya is riding at a constant speed of 12 miles per hour. Write an expression that shows how many miles Priya has gone after Han
    12·2 answers
  • Using the distributive property, which expressions are equivalent to 12+4x?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!